Computer Science
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.2943c&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 55, Oct. 1991, p. 2943-2950.
Computer Science
12
Chemical Composition, Chondrule, Melting Points, Olivine, Imaging Techniques, Levitation Melting, Melts (Crystal Growth), Phase Transformations
Scientific paper
The effects of the bulk composition and the dynamic melting conditions on the texture of olivine chondrules were investigated in a series of heating experiments. It is shown that variations in the olivine chondrule textures can be produced by varying the FeO/(FeO + MgO) ratio between the average Type IA and Type II chondrule compositions, could affect the texture of a chondrule at a constant initial melting temperature and heating time. A range of the heating times and the masses of precursor spheres caused variations in the degree of melting and in chondrule textures. Chondrule textures were distributed on a graph of initial temperatures vs. FeO/(FeO + MgO) ratios as bands parallel to the olivine disappearance curve. This graph could be used to predict chondrule textures from Fe/(FeO + MgO) ratios at specific initial melting temperatures.
Connolly Harold C. Jr.
Hewins Roger H.
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